kengentry5000

My Feedback: (2)

Hi All,

I am about to pull (the rest of) my hair out! I was about to replace a broken plastic upper arm on my Firehammer when I discovered that the left front shock had come undone at the bottom. The retainer clip, washer and both O-rings were resting on the bottom of the shock and there was no oil in it.

I have been trying for almost an hour to figure out how to reassemble the bottom of the shock but can't seem to get it to fit together. I cleaned out the hole as best as possible.

Also, how do I know when I need a shock "rebuild kit" versus just filling up the body with fresh oil? The existing o-rings and other hardware look OK but I have only rebuilt 1:10 scale shocks before.

Any help would be greatly appreciated,
Ken

drevil

My Feedback: (5)

Not sure how much this will help but here is the exploded view of the firehammer's shocks.

kengentry5000

My Feedback: (2)

Thank you for the picture. I have that also and am trying to put it back together as illustrated but I can't seem to pack the two o-rings, washer and clip into the bottom of the shock body. Is there some special technique for packing the o-rings (oiling them, for instance). Also the clip that holds the shock together seems to be a four-handed job.

I just don't get it. I must be missing something easy here. Luckily my other three shocks appear to be intact but have no oil ;-( I will have to refill/rebuild all four before running again.

Ken

kengentry5000

My Feedback: (2)

Got the shock reassembled and rebuilt with 60 weight oil. It was easier than I expected although I did not replace any o-rings. I will see how bad the shocks leak and then make a call about getting some o-rings. Anybody know the size of the o-rings used in Firehammer, XTM and/or Smartech Traveller? I can measure one the next time I take the shock apart but would prefer to be ready with new o-rings at that time. Also, what are the shock o-rings usually made of (polypropelene)?

Duratrax only sells a "rebuild kit". It looks like the only parts that wear out in the shock (that I can tell) will be the o-rings and the upper shock mount (hole stretching). I would prefer to buy the o-rings in bulk to have plenty around (and spend a lot less on them).

Thanks for any additional help,
Ken

teamchrome

My Feedback: (4)

Getting ready to do mine.
Do they leak still?
How is the 60wt oil?

kengentry5000

My Feedback: (2)

I haven't been in large scale long enough to have a clue what the change in oil weight is doing to the car.

Sorry,
Ken